B.t.w. they are showing a 100 amp model in the link I posted but they make them compatible for 200 amp also. In my last house I wired an exterior inlet to plug my generator into. I have installed the outlet directly below the panel and customer used long cord for generator. Provides general use of your house and a much lower price than transfer switches.
Not sure what I'm going to do on my new house. I have a 400 amp service with mains outside so this option won't work for this installation.